package com.fr.design.event;import java.util.EventObject;/** * Created by IntelliJ IDEA. * Author : Richer * Version: 7.0.3 * Date: 12-12-28 * Time: 下午8:25 */public class ChangeEvent extends EventObject {	/**	 * Constructs a prototypical Event.	 *	 * @param source The object on which the Event initially occurred.	 * @throws IllegalArgumentException if source is null.	 */	public ChangeEvent(Object source) {		super(source);	}}